The Fermented Spider Eye is a brewing item on Minecraft. It is crafted from one Spider Eye, one Brown Mushroom, and Sugar. The Fermented Spider Eye cannot be eaten. It is used to make Potions of Weakness when brewed into Water Bottles and can be used to make regular potions become negative ones.
|Potion||+Fermented Spider Eye|
- The only positive potion to not be changed is the Invisibility potion. This is possibly because Splash Potions of Invisibility can be very bad (i.e. invisible Creeper).
- The only negative potion that Fermented Spider Eyes can change is the Potion of Poison.
- Although they are one of the most useful potion ingredients, Witches cannot drop them.
|Positive||Blaze Powder • Sugar • Pufferfish • Golden Carrot • Ghast Tear • Magma Cream • Glistering Melon • Rabbit's Foot|
|Negative||Spider Eye • Fermented Spider Eye|
|Modifiers||Redstone • Glowstone • Gunpowder • Fermented Spider Eye|